drivers/uart/uart8250reg.h: use shifts in constants
The UART8250_FCR_TRIGGER bits are bits 6 and 7 in the register, so
rewrite the mask and constants as constants shifted by 6.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I0663c1a641355b7bfb59f41479d17117178fb895
Reviewed-on: https://review.coreboot.org/c/coreboot/+/61644
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
diff --git a/src/drivers/uart/uart8250reg.h b/src/drivers/uart/uart8250reg.h
index 170c90e..35a6845 100644
--- a/src/drivers/uart/uart8250reg.h
+++ b/src/drivers/uart/uart8250reg.h
@@ -30,11 +30,11 @@
#define UART8250_FCR_CLEAR_RCVR BIT(1) /* Clear the RCVR FIFO */
#define UART8250_FCR_CLEAR_XMIT BIT(2) /* Clear the XMIT FIFO */
#define UART8250_FCR_DMA_SELECT BIT(3) /* For DMA applications */
-#define UART8250_FCR_TRIGGER_MASK 0xC0 /* Mask for the FIFO trigger range */
-#define UART8250_FCR_TRIGGER_1 0x00 /* Mask for trigger set at 1 */
-#define UART8250_FCR_TRIGGER_4 0x40 /* Mask for trigger set at 4 */
-#define UART8250_FCR_TRIGGER_8 0x80 /* Mask for trigger set at 8 */
-#define UART8250_FCR_TRIGGER_14 0xC0 /* Mask for trigger set at 14 */
+#define UART8250_FCR_TRIGGER_MASK (3 << 6) /* Mask for the FIFO trigger range */
+#define UART8250_FCR_TRIGGER_1 (0 << 6) /* Mask for trigger set at 1 */
+#define UART8250_FCR_TRIGGER_4 (1 << 6) /* Mask for trigger set at 4 */
+#define UART8250_FCR_TRIGGER_8 (2 << 6) /* Mask for trigger set at 8 */
+#define UART8250_FCR_TRIGGER_14 (3 << 6) /* Mask for trigger set at 14 */
#define UART8250_LCR 0x03
#define UART8250_LCR_WLS_MSK 0x03 /* character length select mask */